Otway, P.M.; Wood, P.R. 1974 Surveying equipment and procedures for earth deformation studies. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EDS 28 23 p.
Abstract: The Earth Deformation Studies section (EDS) of the New Zealand Geological Survey, DSIR monitors crustal deformation in New Zealand and assesses its nature and rates. Deformation may be determined qualitatively or quantitatively from geological, geodetic and historical records. Since 1969 EDS has adapted normal geodetic techniques and equipment for this specialised type of study. Particular emphasis has been placed on triangulation and precise levelling as electromagnetic distance measuring equipment of sufficient accuracy was not initially available. Accuracy is of prime concern in this work as some anticipated elements are of the order 10-7km/yr vertically, 0.3x10-6 rad/yr horizontally. This paper describes equipment and procedures adopted and developed by EDS in surveys described in the EDS report series. Further experience may result in continuing development, hence changes can be expected (auth)
